We read:
"Sir Gus O'Donnell, the Cabinet Secretary, is to set out new guidance to civil servants to cover blogging and online social networks following the demise of the "Civil Serf" blogger, The Times has learnt. Sir Gus will shortly issue guidelines to tell officials whether they can start up blogs or use social networking websites such as Facebook and YouTube, and even if they can change details on Wikipedia.
A Cabinet Office spokesman denied that the move was directly linked with the Civil Serf blogger, believed to work for the Department for Work and Pensions, who has embarrassed Westminster with her revelations about officials and ministers. The 33-year-old Londoner, who has yet be named, has ridiculed Gordon Brown, the Prime Minister, and Alistair Darling, the Chancellor, as well as accusing the Government of recycling old policies and creating "cheap headlines"....
The new code is likely to restrict information disclosed on blogs or social networks and limit the individuals who can interact with them.
Source
I suppose it was inevitable. Any control that they can exert, they will.